High-Resolution Laser Spectroscopy of Ultracold Ytterbium Atoms

We have ail-optically created various quantum degenerate gases of ytterbium (Yb) atoms. The laser spectroscopy of ultra-narrow intercombination transitions <sup>1</sup>S<sub>0</sub>-<sup>3</sup>P<sub>0</sub> and <sup>1</sup>S<sub>0</sub>-<sup>3</sup>P<sub>2</sub> has been performed to probe the quantum degenerate gases of Yb atoms.

[1]  T. Fukuhara,et al.  Degenerate Fermi gases of ytterbium. , 2006, Physical review letters.

[2]  K. Honda,et al.  Spin-singlet Bose-Einstein condensation of two-electron atoms. , 2003, Physical review letters.